The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 1996
Filed:
Mar. 08, 1995
Applicant:
Inventors:
Thomas A Seder, Cedar Rapids, IA (US);
Brian P Dehmlow, Cedar Rapids, IA (US);
David F Beat, Cedar Rapids, IA (US);
Assignee:
Rockwell International Corporation, Seal Beach, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313491 ; 313492 ; 313574 ; 340642 ;
Abstract
A dual filament fluorescent lamp where the individual filaments are disposed along diameter lines of a fluorescent tube and are disposed on differing planes at differing heights within the tube with a predetermined separation between the tube filaments and the filaments being disposed in a perpendicular fashion when viewed from above. The primary filament is disposed above the secondary filament and it has a larger diameter that the secondary filament.